<template>
  <el-menu
    default-active="1-4-1"
    class="el-menu-vertical-demo"
    background-color="#545c64"
    text-color="#fff"
    active-text-color="#ffd04b"
    @open="handleOpen"
    @close="handleClose"
    :collapse="isCollapse"
  >
    <h3>{{isCollapse ? '后台' :'通用后台管理系统'}}</h3>
    <el-menu-item
    @click="clickMenu(item)"
      v-for="item in noChildren"
      :index="item.path"
      :key="item.path"
    >
      <i :class="'el-icon-' + item.icon"></i>
      <span slot="title">{{ item.label }}</span>
    </el-menu-item>
    <el-submenu v-for="item in hasChilder" :index="toString(item.path) " :key="item.path">
      <template slot="title">
        <i :class="'el-icon-' + item.icon"></i>
        <span slot="title">{{ item.label }}</span>
      </template>
      <el-menu-item-group
        v-for="(subItem, subIndex) in item.children"
        :key="subItem.path"
      >
        <el-menu-item :index="toString(subIndex)" @click="clickMenu(subItem)">{{ subItem.label }}</el-menu-item>
      </el-menu-item-group>
    </el-submenu>
  </el-menu>
</template>

<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
  white-space:nowrap
}
.el-menu {
  height: 100%;
  border: none;
  h3 {
    color: #fff;
    text-align: center;
    line-height: 48px;
  }
}

</style>



<script>
export default {
  data() {
    return {
      menu: [
   ]}
  },
  
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },
    clickMenu(item){
      this.$router.push({
        name:item.name
       })
       this.$store.commit('selectMenu',item)
    }
  },

  computed: {
    noChildren() {
      return this.asyncMenu.filter((item) => !item.children);
    },
    hasChilder() {
      console.log('---haschildren--',this.asyncMenu.filter((item) => item.children))
      return this.asyncMenu.filter((item) => item.children);
    },
    isCollapse(){
      return this.$store.state.tab.isCollapse
    },
    asyncMenu(){
      return this.$store.state.tab.menu
    }
  },
};
</script>